Q: Is 688,923 a Prime Number?
A: No, 688,923 is not a prime number.
A prime number is a natural number, greater than one, that can only be divided by 1 and itself.
The number 688923 can be evenly divided by 1 3 9 41 123 369 1,867 5,601 16,803 76,547 229,641 and 688,923, with no remainder.
Since 688,923 cannot be divided by just 1 and 688,923, it is not a prime number.